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  1. //Bai 6
  2.  
  3. #include<bits/stdc++.h>
  4. using namespace std;
  5. #define el "\n"
  6. #define ll long long
  7. #define ull unsigned long long
  8. #define se second
  9. #define fi first
  10. #define be begin()
  11. #define en end()
  12. #define Faster cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
  13.  
  14. void Run(int n)
  15. {
  16.     cin >> n;
  17.     for(int i = 1; i < 2 * n; i++)
  18.     {
  19.         if(i <= n)
  20.         {
  21.             for(int j = 1; j < 2 * i; j++) cout << "*";
  22.         }
  23.         else
  24.         {
  25.             for(int j = 1; j < 2 * (2 * n - i); j++) cout << "*";
  26.         }
  27.         cout << el;
  28.     }
  29. }
  30. int main()
  31. {
  32.     Faster;
  33.     int n;
  34.     Run(n);
  35.     return 0;
  36. }
  37.  
  38.  
Success #stdin #stdout 0s 5280KB
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/3o6Ivc
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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